The research status of pipe dual water supply in China are presented, which concludes the common water supply form, treatment technology, disinfection methods and so on in practical engineering.

Disinfectant allowance and disinfection by-products index according to the water supply plant of the actual use of the disinfectant selection.

And also given some suggestion on swimming pool design about circulating period, setting time of water supply and discharge, disinfection of water in pool, design of inlet outlet and overflow slot.